Articles | Volume 26, issue 16
https://doi.org/10.5194/hess-26-4391-2022
https://doi.org/10.5194/hess-26-4391-2022
Research article
 | 
26 Aug 2022
Research article |  | 26 Aug 2022

Recession discharge from compartmentalized bedrock hillslopes

Clément Roques, David E. Rupp, Jean-Raynald de Dreuzy, Laurent Longuevergne, Elizabeth R. Jachens, Gordon Grant, Luc Aquilina, and John S. Selker

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Cited articles

Achtziger-Zupančič, P., Loew, S., and Mariéthoz, G.: A new global database to improve predictions of permeability distribution in crystalline rocks at site scale, J. Geophys. Res.-Solid, 122, 3513–3539, https://doi.org/10.1002/2017JB014106, 2017. 
Ameli, A. A., McDonnell, J. J., and Bishop, K.: The exponential decline in saturated hydraulic conductivity with depth: a novel method for exploring its effect on water flow paths and transit time distribution, Hydrol. Process., 30, 2438–2450, https://doi.org/10.1002/hyp.10777, 2016. 
Ameli, A. A., Laudon, H., Teutschbein, C., and Bishop, K.: Where and When to Collect Tracer Data to Diagnose Hillslope Permeability Architecture, Water Resour. Res., 57, e2020WR028719, https://doi.org/10.1029/2020WR028719, 2021. 
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Ayraud, V., Aquilina, L., Labasque, T., Pauwels, H., Molenat, J., Pierson-Wickmann, A. C., Durand, V., Bour, O., Tarits, C., Le Corre, P., Fourre, E., Merot, P., and Davy, P.: Compartmentalization of physical and chemical properties in hard-rock aquifers deduced from chemical and groundwater age analyses, Appl. Geochem., 23, 2686–2707, https://doi.org/10.1016/j.apgeochem.2008.06.001, 2008. 
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Short summary
Streamflow dynamics are directly dependent on contributions from groundwater, with hillslope heterogeneity being a major driver in controlling both spatial and temporal variabilities in recession discharge behaviors. By analysing new model results, this paper identifies the major structural features of aquifers driving streamflow dynamics. It provides important guidance to inform catchment-to-regional-scale models, with key geological knowledge influencing groundwater–surface water interactions.